pm2 trigger command hangs

[pankleks]

I sending custom command to pm2 process with pm2 trigger myapp test

After issuing command pm2 answers:

[myapp:4]="my answer"
1 processes have received command test

Then it hangs.

This does not happen everytime, in most cases it works - but I can't find any pattern.

System: Ubuntu 16.04, 18.04
PM2: 2.6, 3.0.0

In my app I respond according to doc:

        Pmx.action("test", (reply) => {
            reply(`my answer`);
        });

[Unitech]

Are you using https://www.npmjs.com/package/pmx or https://www.npmjs.com/package/@pm2/io?
Which pmx version?

Thanks

[pankleks]

Thanks for reply. I'm using Pmx

[pankleks]

Not sure how to check pmx version, I'm adding package pm2 in version 2.10.4

[Unitech]

action.js:

var pmx = require('pmx')

pmx.action("test", (reply) => {
  reply(`my answer`);
});

$ pm2 start action.js 
$ pm2 trigger action test
c1 processes have received command test
[action:0]="my answer"

PMX version 1.6.7, PM2 3.0

I did the command 20 times it worked every time.

How did you started your application?

[pankleks]

it's installed as pm2 module with pm2 install my-app

[wallet77]

It seems we have this behavior if (and only if) the called action doesn't exist.
I will try to fix it but it seems to not be your issue because your action is received by application.